First thing is to figure out if the plug for the seats is the same as the one on your car. Have someone who has comfort seats post a picture of the plug.
If its the same, you are halfway there. If its not, you need to figure out which plastic connector you need to purchase. See
http://www.realoem.com/bmw/partgrp.d...64&hg=61&fg=15. You will need to repin the new connector with the wires from your existing harness. For that you need a copy of WDS which shows the wiring for your car. You can find that on torrent sites
After you get the seats wired, you will need to code the car. Let us know when you get to that point and we can tell you how to modify your vehicle order and which modules you need to code